🚧Update to dotnet 8

[CalvinWilkinson]

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• I have updated the title without removing the 🚧 emoji.

Description

Update projects to dotnet 8. This will require going to each project and updating the .csproj file. The repository variable will also need to be updated as well after release.

Update the language version in all projects to C# 12.

Warning
Make sure to update the repo variable value to the correct version or builds and tests will not work correctly.

Acceptance Criteria

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1. All projects updated to dotnet 8
2. C# language set to version 12

ToDo Items

• Change type labels added to this issue. Refer to the Change Type Labels section below.
• Priority label added to this issue. Refer to the Priority Type Labels section below.
• Issue linked to the correct milestone (if applicable).

Issue Dependencies

• 🚧Add dotnet SDK checks to release workflows Infrastructure#185

Related Work

No response

Additional Information:

Change Type Labels

Change Type	Label
Bug Fixes	🐛bug
Breaking Changes	🧨breaking changes
New Feature	✨new feature
CICD Changes	♻️cicd
Config Changes	⚙️config
Performance Improvements	🏎️performance
Code Doc Changes	🗒️documentation/code
Product Doc Changes	📝documentation/product

Priority Type Labels

Priority Type	Label
Low Priority	low priority
Medium Priority	medium priority
High Priority	high priority

Code of Conduct

• I agree to follow this project's Code of Conduct.